Euryopis Menge, 1868

Rodrigues, Everton Nei Lopes, Marta, Kimberly S. & Figueiredo, Cassiano P., 2021, Description of four new species of the spider genus Euryopis Menge, 1868, with new records from Brazil (Araneae, Theridiidae, Hadrotarsinae), Zootaxa 4966 (5), pp. 535-549 : 536

Genus Euryopis Menge, 1868

Type species: Micryphantes flavomaculatus C. L. Koch, 1836 (= Euryopis flavomaculata )

Diagnosis. Euryopis differs from Dipoena , Lasaeola and Phycosoma by the absence of carapace spherical or rounded and by the absence of distinct cervical grooves. Euryopis presents carapace oval ( Figs 1A , 2A , 3A , 4A ), not modified. Differs from Guaraniella by the cymbium without deep apical notch. Differs from Audifia by the abdomen without a sclerotized ring around the spinnerets and pedicel and differs from Audifia by the not elongate carapace. Euryopis has an oval ( Figs 1A , 2A , 4A , 5A ) or subtriangular abdomen (see Levi 1963, Fig. 9 ), dorsoventrally flat ( Fig. 7D ), sometimes project over the carapace; blackish brown to black ( Fig. 1A ), sometimes with silver dots and males with sclerotized scutum on the dorsum ( Figs 7A, D ). The females of Euryopis have the epigynum with an oval depression ( Fig. 9C ); and males have a distal cymbial projection ( Fig. 8A ), however there are some species lacking such projection ( Fig. 8D ) or having it little pronounced ( Figs 8B, C ).

Figures

FIGURE 1. Euryopis candiota n. sp. A–D. Male habitus: A, Dorsal view. B, Ventral view. C, Frontal view. D, Lateral view. Scale bars: 1 mm.

FIGURE 2. Euryopis candiota n. sp. A–D. Female habitus: A, Dorsal view. B, Ventral view. C, Frontal view. D, Lateral view. Scale bars: 1 mm.

FIGURE 3. Euryopis nasuta n. sp. A–D. Male habitus:A, Dorsal view. B, Ventral view. C, Frontal view. D, Lateral view. Scale bars: 1 mm.

FIGURE 4. Euryopis nasuta n. sp. A–D. Female habitus: A, Dorsal view. B, Ventral view. C, Frontal view. D, Lateral view. Scale bars: 1 mm.

FIGURE 5. Euryopis boliviensis n. sp. A–D. Male habitus: A, Dorsal view. B, Ventral view. C, Frontal view. D, Lateral view. Scale bars: 1 mm.

FIGURE 7. Euryopis catarinensis n. sp. A–D. Male habitus:A, Dorsal view. B, Ventral view. C, Frontal view. D, Lateral view. Scale bars: 1 mm.

FIGURE 8. Male palp Euryopis n. sp., ventral view. A, Euryopis candiota n. sp. B, Euryopis nasuta n. sp. C, Euryopis boliviensis n. sp. D, Euryopis catarinensis n. sp. Abbreviations: Cy, cymbium; E, embolus; MA, median apophysis, ST, subtegulum; T, tegulum. Scale bars: 0.25 mm.

FIGURE 9. Epigyna of new species of Euryopis. A, B. Euryopis candiota n. sp. A, Ventral view. B, Dorsal view, clarified. C, D. Euryopis nasuta n. sp.: C, Ventral view; D, Dorsal view, clarified. E, F. Euryopis boliviensis n. sp. E, Ventral view; F, Dorsal view, clarified. Abbreviations: CD, copulatory ducts; CO, copulatory openings; FD, fertilization ducts; SS, second pair of spermathecae; FS, first pair of spermathecae. Scale bars: 0.25 mm.